1312295 玖、發明說明： 【發明所屬之技術領域】 本發明係關於適宜切斷為例如，可再利用伴隨著熱可塑 性合成樹脂製品的成形所產生的副產物（渣滓·澆道物）的 細斷片的細斷機。 【先前技術】 以往，已知曉之此種細斷機如下。 如下的細斷機已廣為所知，其具有：平面形狀為矩形的 下部殼體，其下部具有出口；平面形狀為矩形的上部殼體， 其可沿上下方向搖動開閉自如地設於下部殼體；具有旋轉 刃的旋轉軸，在將軸心面向左右方向的狀態可旋轉自如地 橫跨於下部殼體的左右側壁上；固定刃，係設於上部殼體 的前壁的内側，藉由與旋轉刃的協動而細斷被處理物；及 刮刀，係設於上部殼體的後壁的内側，旋轉刃係位於固定 刃與刮刀之間（參照日本專利實開平6 - 1 6, 0 1 6號公報）。 但是，上述之以往的細斷機具有如下的缺點。 雖然，形成上部殼體可相對於下部殼體搖動開閉自如的 結構，但因為下部殼體及上部殼體均為平面形狀為矩形的 框體狀，因而有相當不容易進行維護及清潔的缺點。 【發明内容】 本發明為了解消上述缺點，採用了如下的機構。 (1 )申請專利範圍第1項之發明，係形成為如下的結構， 即具備：左右的固定側壁，以隔開指定間隔而配置；前後 的支持軸，係跨過固定於固定側壁的前後部下部；前後的 5[Technical Field] The present invention relates to a fine chip which is suitably cut into, for example, a by-product (slag/gate) which is produced by molding of a thermoplastic resin synthetic resin product. Fine break. [Prior Art] In the past, such a fine cutting machine has been known as follows. A fine-cutting machine is known which has a lower housing having a rectangular shape and a lower portion having an outlet; and an upper housing having a rectangular shape in plan view, which is swingably opened and closed in the up-and-down direction and is disposed in the lower housing. a rotating shaft having a rotating blade rotatably straddles the left and right side walls of the lower casing in a state in which the axial center faces the left-right direction; the fixed blade is disposed on the inner side of the front wall of the upper casing by And the scraping blade cooperates to break the object to be processed; and the scraper is disposed on the inner side of the rear wall of the upper casing, and the rotating blade is located between the fixed blade and the scraper (refer to Japanese Patent Laid-Open No. 6 - 1 6, 0 Bulletin No. 1 6). However, the above conventional fine cutter has the following disadvantages. Although the upper casing can be configured to be swingably opened and closed with respect to the lower casing, since both the lower casing and the upper casing have a rectangular frame shape, there is a disadvantage that maintenance and cleaning are relatively difficult. SUMMARY OF THE INVENTION In order to eliminate the above disadvantages, the present invention employs the following mechanism. (1) The invention of claim 1 is formed as follows: a left and right fixed side walls are disposed at a predetermined interval; the front and rear support shafts are spanned to the front and rear portions fixed to the fixed side walls. Lower part; front and rear 5
312/發明說明書(補件)/92-11 /92122727 1312295 搖動側壁，係可搖動開閉自如地設於支持軸上；連結件， 係跨過固定於左右的固定側壁的上部前部；具有旋轉刃的 旋轉軸，係可旋轉自如地跨於固定側壁上；固定刃，係設 於前面的搖動側壁的内側，藉由與旋轉刃的協動而細斷被 處理物；及刮刀，係設於後面的搖動側壁的内側，旋轉刃 係位於固定刃與刮刀之間。 (2 )申請專利範圍第2項之發明，係於申請專利範圍第1 項之發明，於上述旋轉軸設置臂狀的粗切斷用旋轉刃及外 周具有鋸齒狀的細斷齒的細切斷用旋轉刃；設置以位於固 定刃及刮刀下方的方式包覆粗切斷用旋轉刃的移動執跡空 間的包覆構件；上述包覆構件具有設於前面的搖動側壁的 前側構件、設於後面的搖動側壁的後側構件、及連接前側 構件與後側構件的與此等為別體的中間構件；上述中間構 件係形成為可裝脫自如。 (3 )申請專利範圍第3項之發明，係於申請專利範圍第2 項之發明，於上述前後的搖動側壁設置以打開此等的狀態 支持包覆構件的中間構件的支持構件，在前後的搖動側壁 成為豎起狀態時，藉由設於前面的搖動側壁的支持構件及 包覆構件的前側構件和設於後面的搖動側壁的支持構件及 包覆構件的後側構件，以使包覆構件的中間構件形成為無 法前後方向移動。 (4 )申請專利範圍第4項之發明，係於申請專利範圍第2 項之發明，上述固定刃具有左右方向較長的位於粗切斷用 旋轉刃前端的移動軌跡前侧的前構件，及與前構件別體的 6312/Invention Manual (Supplement)/92-11 /92122727 1312295 The side wall is rocked and can be freely mounted on the support shaft; the connecting member is spanned over the upper front portion fixed to the left and right fixed side walls; a rotating shaft rotatably straddles the fixed side wall; the fixed blade is disposed on the inner side of the front rocking side wall, and the workpiece is finely broken by the cooperation with the rotating blade; and the scraper is attached to the rear The inner side of the rocking side wall is located between the fixed edge and the doctor blade. (2) The invention of claim 2 is the invention of claim 1, wherein the arm-shaped rough cutting blade and the outer peripheral have fine-cut teeth having serrations a covering member for covering a movement-receiving space of the rough cutting rotary blade in a manner of being located under the fixed blade and the blade; the covering member having a front side member provided on the front rocking side wall and disposed at the rear The rear side member of the rocking side wall and the intermediate member connecting the front side member and the rear side member and the other are formed; the intermediate member is formed to be detachable. (3) The invention of claim 3, in the invention of claim 2, is provided in the front and rear rocking side walls to open the supporting members of the intermediate members supporting the covering members in the state of the front and rear When the rocking side wall is in the erected state, the supporting member provided on the front side of the rocking side wall and the front side member of the covering member and the supporting member provided on the rear rocking side wall and the rear side member of the covering member are used to make the covering member The intermediate member is formed so as not to move in the front-rear direction. (4) The invention of claim 4 is the invention of claim 2, wherein the fixed blade has a front member located on a front side of a movement locus at a front end of the rough cutting rotary blade, which has a long side in the left-right direction, and 6 with the front member
312/發明說明書(補件)/92-11 /921227W 1312295 在粗切斷用旋轉刃的移動軌跡的位置分斷的後構件。 (5 )申請專利範圍第5項之發明，係於申請專利範圍第1 至4項中任一項之發明，在上述旋轉軸的左端部的内側部 形成左螺旋部，在同右端部的内側部形成右螺旋部，此等 左右螺旋部係形成為與固定側壁之用以嵌合旋轉軸的孔的 内面呈對向的狀態。 本發明藉由如上述的構成可獲得如下的效果。 (1 )根據申請專利範圍第1項之發明，因為打開前後的 搖動側壁，因此容易進行維護及清潔。另外，因為由2根 支持軸與1根連結件連結左右的固定側壁，因此可增大細 斷機的剛性。又，因為2根支持軸兼作連結搖動側壁的枢 軸與左右的固定側壁的連結件，因此可減少零件數且降低 成本。 (2 )根據申請專利範圍第2項之發明，因為包覆構件的 中間構件形成為可裝脫自如，因此容易進行維護。 (3 )根據申請專利範圍第3項之發明，可簡單進行包覆 構件的中間構件的固定。 (4 )根據申請專利範圍第4項之發明，因為可個別、獨 立地調節固定刃的前構件與同後構件的位置，因而可容易 調節固定刃的相對於旋轉刃（粗切斷用旋轉刃及細切斷用 旋轉刃）的位置。 (5 )根據申請專利範圍第5項之發明，因為藉由螺旋部 可將被處理物送出於内側，因此可以防止因被處理物而造 成阻礙旋轉軸的旋轉的故障。 7312/Invention Manual (Supplement)/92-11 /921227W 1312295 The rear member that is divided at the position of the movement locus of the rough cutting rotary blade. (5) The invention of claim 5, wherein the invention of any one of claims 1 to 4 forms a left spiral portion on the inner side portion of the left end portion of the rotating shaft, on the inner side of the right end portion The right portion forms a right spiral portion, and the left and right spiral portions are formed to face the inner surface of the hole for fitting the rotating shaft of the fixed side wall. According to the present invention, the following effects can be obtained by the above configuration. (1) According to the invention of claim 1 of the patent application, since the front and rear rocking side walls are opened, maintenance and cleaning are easy. Further, since the left and right fixed side walls are connected by the two support shafts and one link member, the rigidity of the severing machine can be increased. Further, since the two support shafts also serve as a joint for connecting the pivot of the rocking side wall and the left and right fixed side walls, the number of parts can be reduced and the cost can be reduced. (2) According to the invention of claim 2, since the intermediate member of the covering member is formed to be detachable, maintenance is easy. (3) According to the invention of claim 3, the fixing of the intermediate member of the covering member can be easily performed. (4) According to the invention of claim 4, since the positions of the front member and the rear member of the fixed blade can be individually and independently adjusted, the fixed blade can be easily adjusted with respect to the rotary blade (the rough cutting blade) And the position of the rotary blade for fine cutting. (5) According to the invention of claim 5, since the object to be processed can be sent to the inside by the spiral portion, it is possible to prevent the failure of the rotation of the rotating shaft due to the object to be processed. 7
312/發明說明書(補件)/92-11/92122727 1312295 【實施方式】 以下，說明本發明之實施形態。 又，在該說明中，稱前面為圖1的紙面表面侧，後面為 同背面側，左面為圖1的左側，右面為同圖1的右側。 安裝於細斷機1的水平基板2的殼體3，係在上部具有 入口 4，而在下部具有出口 5。在上述基板2上，以與出口 5對向的方式形成開口 6。在基板2的開口 6的下方配置接 受細斷片的接受箱（省略圖示）。 上述殼體3具有：在左右方向上隔開指定的間隔而配置 的左右的固定侧壁9 ;跨過此等固定側壁9的前後下部而 固定的前後的支持軸1 0 ;可前後搖動開閉自如地設於此等 支持軸1 0的前後的搖動側壁1 1 ;及跨過左右的固定側壁9 的上部前部而固定的連結件1 2。上述支持軸1 0具有作為 可搖動自如地支持搖動側壁1 1的樞軸及連結固定側壁9 的連結件的功能。又，前面的搖動側壁1 1係形成為在頂觸 及連結件1 2而越過圖5的位置後則不搖動的狀態，後面的 搖動側壁1 1係形成為在頂觸及圖示省略的止動部（設於固 定側壁9 )而越過圖5的位置前即不搖動的狀態。 如圖4所示，在上述固定側壁9形成使軸心向著左右方 向的同心的貫穿孔1 5，在此等貫穿孔1 5安裝著軸承1 6， 在此等軸承1 6内可旋轉自如地跨設著軸心沿著左右方向 的旋轉軸1 7。上述旋轉軸1 7係藉由馬達1 8 (參照圖1 )而 形成為沿著箭頭A的方向旋轉的狀態。又，在上述旋轉軸 1 7的左端部的内側形成有左螺旋部1 9，在同右端部的内側 312/發明說明書(補件)/92-11/92122727 1312295 形成有右螺旋部2 Ο，此等左右螺旋部1 9、2 0係形成為於 貫穿孔1 5的内面呈對向的狀態。藉由如此的構成，伴隨著 旋轉軸1 7沿著箭頭Α方向的旋轉，進入左右螺旋部1 9、 2 〇與貫穿孔1 5的内面之間的被處理物（包含細斷片），被 送出於殼體3的内部。 在上述旋轉軸1 7，以沿著左右方向隔開指定間隔，且在 與固定側壁9間也可隔開間隔的方式，嵌合固定著至少1 個、本實施形態中為2個的臂狀的粗切斷用旋轉刀23。另 外，在旋轉軸1 7嵌合固定著至少1個、本實施形態中為3 個的細切斷用旋轉刃2 4。又，使相互鄰接的粗切斷用旋轉 刀2 3及細切斷用旋轉刃2 4密接，最左及最右的細切斷用 旋轉刃2 4係在固定側壁9以不阻礙此等的旋轉的方式隔開 略微的間隙而對向。在上述粗切斷用旋轉刀2 3形成有旋轉 工具用的角孔25。藉由如此的構成，將旋轉工具嵌入角孔 2 5即可以手動使粗切斷用旋轉刃2 3旋轉。在上述細切斷 用旋轉刃24上沿著左右方向以指定的間隔形成有環狀溝 2 7，在環狀溝2 7與環狀溝2 7之間的突部2 8形成有鋸齒狀 的細斷齒2 9 (參照圖7 )。 在上述前面的搖動側壁1 1的内側，以沿著後方而向下 傾斜的方式安裝有藉由與粗切斷用旋轉刃23及細切斷用 旋轉刃24的協動而細斷被處理物的固定刃32。上述固定 刃32具有左右方向較長的位於粗切斷用旋轉刃23前端的 移動執跡前側的前構件3 2 a，及與前構件3 2 a別體在粗切 斷用旋轉刃2 3的移動軌跡的位置分斷的後構件3 2 b (參照 9 31刀發明說明書(補件)/92_ 11 /92122727 1312295 圖3 )。 如圖7所示，上述前構件3 2 a係藉由所需根數的螺栓3 3 而固定於前面的搖動側壁1 1上，面向著粗切斷用旋轉刃 2 3的移動軌跡的後緣係形成為具有作為刃（藉由與粗切斷 用旋轉刀2 3的協動而細斷被處理物的刃）的功能。 如圖7所示，上述後構件3 2 b係藉由所需根數的螺栓3 4 及螺母3 5而固定於前面的搖動側壁1 1上，面向著粗切斷 用旋轉刀2 3的移動軌跡的側緣係形成為具有作為刃（藉由 與粗切斷用旋轉刃2 3的協動而細斷被處理物的刃）的功 能。另外，上述後構件3 2 b的後緣係以與細切斷用旋轉刃 2 4嚙合的方式形成凹凸（參照圖3 )，該凹凸形成為刃（藉由 與細切斷用旋轉刃24的協動而細斷被處理物的刃）。上述 螺栓3 4的頭部係在無嵌入被處理物的凹陷的上方形成為 凸的曲面。另外，螺栓3 4的軸部上部（頭部以下的部分） 形成為角軸部（剖面為矩形軸），該角軸部係嵌合於後構件 上所3 2 b形成的角孔内，螺栓3 4係形成為不相對於後構件 3 2 b作相對旋轉的狀態。 在上述後面的搖動側壁1 1的内側，以向著前方而向下 傾斜的方式安裝著藉由與細切斷用旋轉刃24的協動而到 落被處理物的3個刮刀38。上述刮刀38係配設為不與粗 切斷用旋轉刃2 3衝突、干涉的狀態。如圖7所示，上述刮 刀3 8係藉由所需根數的螺栓3 4及螺母3 5而固定於後面的 搖動側壁1 1上，刮刀3 8的前緣係以與細切斷用旋轉刃24 嚙合的方式形成凹凸（參照圖3 )，該凹凸形成有刮落部（藉 10 312/發明說明書(補件)/92-11 /92122727 1312295 由與細切斷用旋轉刃24的協動而刮落被處理物的部分）。 藉由如上述的構成，形成為上述粗切斷用旋轉刃23及 細切斷用旋轉刃2 4位在固定刃3 2與刮刀3 8之間的狀態。 如圖5及圖6所示，以位於上述固定刃32與刮刀38之 下方的方式設置包覆粗切斷用旋轉刃2 3的移動軌跡空間 的包覆構件4 0。上述包覆構件4 0具有設於前面的搖動側 壁1 1上的前側構件4 0 a ;設於後面的搖動側壁1 1上的後 側構件4 0 c ;及連接前側構件4 0 a與後側構件4 0 c，且與此 等別體的中間構件4 0 b。又，在圖5中，以「L」顯示前側 構件4 0 a與中間構件4 0 b的境界，以「Μ」顯示中間構件 4 0 b與後側構件4 0 c的境界。 上述中間構件4 0 b係藉由如下的機構而可裝脫自如地形 成於殼體3上。 在上述前後的搖動侧壁1 1上，設置在打開此等的狀態 下支持包覆構件4 0的中間構件4 0 b的支持構件4 2。另外， 在前後的搖動側壁1 1上，設置阻止中間構件4 0 b的左右方 向的移動的保持構件4 3。然後，在關閉前後的搖動側壁1 1 時（作為豎起狀態時），藉由前後的支持構件4 2、前側構件 4 0 a及後側構件4 0 c，以使中間構件4 0 b形成為不會向前後 方向移動的狀態，同時，藉由保持構件4 3形成不會向左右 方向移動的狀態。另外，如上所述，支持處於固定狀態的 中間構件4 0 b的下部的支持棒4 4，係跨過左右的固定側壁 9的下部而固定。該支持棒4 4在打開前後的搖動側壁1 1 的狀態下將包覆構件4 0的中間構件4 0 b跨於支持構件4 2 11 312/發明說明書(補件)/92-11 /9212272 7 1312295 間時，具有作為支持中間構件40b的棒的功能。藉由如上 述的構成，藉由打開前後的搖動側壁1 1可簡單地將中間構 件4 0 b取出於殼體3，因此，可簡單進行中間構件4 0 b内 的清潔。 上述前後的搖動側壁1 1在圖5的狀態的位置，藉由圖8 所示鎖住裝置4 6而被鎖住。 上述鎖住裝置46具有：相互對向的從上方看具有朝向 前端側開放的錐形面47的平面形狀為：？字狀的鎖片48 ; 穿通形成於鎖片48的貫穿孔49而螺嵌於固定側壁9上形 成的螺絲孔5 0的附設有把手的螺絲5 1 ;形成於與錐形面 4 7對向的固定側壁9上的傾斜面5 2 ;及形成於搖動侧壁 1 1上的傾斜面5 2 ^藉由如此的構成，在使錐形面4 7與傾 斜面5 2對向後，拴緊螺絲5 1而將錐形面4 7頂接於傾斜面 5 2，即可將搖動側壁1 1鎖定於固定側壁9上。 在上述右邊的固定側壁9設有介由鉸鏈5 5而可搖動開 閉自如的進料機5 6。又，進料機5 6係形成為在圖1的狀 態藉由公知的鎖住裝置（省略圖示）而固定於左邊的固定側 壁9的狀態。 在上述進料機5 6與搖動侧壁1 1設有聯鎖（i η ΐ e r 1 〇 c k ) 裝置5 7。上述聯鎖裝置5 7具有設於搖動側壁1 1的上部的 反射型的光電開關58 ;及在圖1的狀態被光電開關58所 檢測的設於進料機5 6上的被檢測片5 9。於是，只要光電 開關5 8未檢測出被檢測片5 9，亦即，搖動側壁1 1關閉（呈 為豎起狀態），且進料機5 6不成為裝載於殼體3上的狀態， 12 312/發明說明書(補件)/92-11 /92122727 1312295 即便將細斷機1的主開關置於「Ο N」的位置，馬達1 8仍不 會進行動作。在上述進料機56的下部設有可阻止搖動侧壁 1 1的不經意的打開的承受片6 0。 細斷機1的作用與習知相同。 以下，針對變化例等進行補充說明。 (1 )粗切斷用旋轉刃2 3及細切斷用旋轉刃2 4係為申請 專利範圍第1項之旋轉刃。粗切斷用旋轉刃2 3及細切斷用 旋轉刃24的構造為任意。 (2 )也可不設置聯鎖裝置5 7。 (產業上的可利用性） 本發明可廣泛用於細斷各種的素材。 【圖式簡單說明】 圖 1 為 顯 示 本 發 明 之 實 施 形 態 之 要 部 前 視 圖 0 圖 2 為 沿 著 圖 1 中 的 Π ~ Π 線 所 作 的 剖 面 圖 〇 圖 3 為 沿 著 圖 1 中 的 m - m 線 所 作 的 剖 面 圖 〇 圖 4 為 僅 顯 示 沿 著 圖 1 中 的 IV - IV 線 所 作 中 間 省 略 的要 的 剖 面 圖 〇 圖 5 為 沿 著 圖 1 中 的 V ~ V 線 所 作 的 剖 面 圖 〇 圖 6 為 消 除 沿 著 圖 5 中 的 VI - VI 線 的 固 定 刃 的 剖 面 圖。 圖 7 為 沿 著 圖 1 中 的 VH ~ VE 線 所 作 的 剖 面 圖 〇 圖 8 為 沿 著 圖 1 中 的 Μ ~ Μ 線 所 作 的 剖 面 圖 0 圖 9 為 沿 著 圖 1 中 的 IX ~ IX 線 所 作 的 剖 面 圖 〇 (元件符號說明） 1 細斷機 13 312/發明說明書(補件)/92-11/92122727 1312295 2 水 平 基 板 3 殼 4 入 Π 5 出 口 6 開 口 9 固 定 側 壁 10 支 持 軸 11 搖 動 側 壁 12 連 結 件 15 貫 穿 孔 16 軸 承 17 旋 轉 軸 18 馬 達 19 左 螺 旋 部 2 0 右 螺 旋 部 23 粗 切 斷 用 旋 轉刃 24 細 切 斷 用 旋 轉刃 25 角 孔 27 環 狀 溝 28 突 部 2 9 細 斷 齒 '固 定 刃 3 2a 前 構 件 3 2b 後 構 件 312/發明說明書(補件)/92-11 /92122727 14 1312295 33 螺栓 34 螺栓 3 5 螺母 3 8 刮刀 40 包覆構件 40a 前側構件 40b 中間構件 40c 後側構件 42 支持構件 43 保持構件 44 支持棒 46 鎖住裝置 4 7 錐形面 48 鎖片 4 9 貫穿孔 5 0 螺絲孔 5 1 附有把手之螺絲 5 2 傾斜面 5 5 鉸鏈 5 6 進料機 5 7 聯鎖裝置 58 光電開關 5 9 被檢測片 6 0 承受片 312/發明說明書(補件)/92-11 /92122727 15312/Invention Manual (Supplement)/92-11/92122727 1312295 [Embodiment] Hereinafter, embodiments of the present invention will be described. Further, in the above description, the front surface is referred to as the paper surface side of Fig. 1, the rear surface is the same rear surface side, the left side is the left side of Fig. 1, and the right side is the right side of Fig. 1. The casing 3 of the horizontal substrate 2 mounted on the fine die 1 has an inlet 4 at the upper portion and an outlet 5 at the lower portion. On the substrate 2, an opening 6 is formed in such a manner as to face the outlet 5. A receiving box (not shown) that receives the fine pieces is disposed below the opening 6 of the substrate 2. The casing 3 has left and right fixed side walls 9 that are disposed at predetermined intervals in the left-right direction, and front and rear support shafts 10 that are fixed across the front and rear lower portions of the fixed side walls 9; The rocking side wall 1 1 of the front and rear support shafts 10 is provided, and the joint member 1 2 which is fixed across the upper front portion of the left and right fixed side walls 9 is provided. The support shaft 10 has a function as a pivot that can swingably support the rocking side wall 1 and a connecting member that connects the fixed side walls 9. Further, the front rocking side wall 11 is formed so as not to be shaken after the top contact and the coupling member 12 have passed the position of FIG. 5, and the rear rocking side wall 1 1 is formed as a stopper that is omitted at the top contact and the illustration. (provided on the fixed side wall 9) and not in a state of being shaken before passing the position of FIG. As shown in FIG. 4, a through hole 15 is formed in the fixed side wall 9 so that the axis is oriented in the left-right direction, and the bearing 16 is mounted on the through hole 15 in this case. A rotation axis 17 in which the axis is along the left and right direction is spanned. The rotating shaft 17 is formed in a state of being rotated in the direction of the arrow A by the motor 18 (see Fig. 1). Further, a left spiral portion 19 is formed inside the left end portion of the rotating shaft 17 and a right spiral portion 2 is formed on the inner side 312 of the right end portion/invention description (supplement)/92-11/92122727 1312295. These left and right spiral portions 19 and 20 are formed in a state of being opposed to the inner surface of the through hole 15 . With such a configuration, as the rotation axis 17 rotates in the direction of the arrow ,, the object (including the fine piece) that enters between the left and right spiral portions 19 and 2 and the inner surface of the through hole 15 is sent out. Inside the housing 3. At least one of the rotation shafts 7 7 is spaced apart from each other at a predetermined interval in the left-right direction, and is spaced apart from the fixed side wall 9 so as to be spaced apart from each other in the present embodiment. The rough cutting blade 23 is used for rough cutting. Further, at least one of the fine cutting rotary blades 24 in the present embodiment is fitted and fixed to the rotating shaft 17 . Further, the coarse cutting rotary blade 2 3 and the fine cutting rotary blade 24 which are adjacent to each other are in close contact with each other, and the leftmost and rightmost fine cutting rotary blades 24 are fixed to the side wall 9 so as not to hinder the like. The way of rotation is opposite to each other by a slight gap. A corner hole 25 for a rotary tool is formed in the above-described rough cutting rotary blade 23. With such a configuration, the rotary cutter 2 can be manually rotated by inserting the rotary tool into the corner hole 25. The annular cutting groove 2 is formed at a predetermined interval in the left-right direction on the fine cutting rotary blade 24, and the projections 28 between the annular groove 27 and the annular groove 27 are formed in a zigzag shape. Fine teeth 2 9 (refer to Figure 7). In the inner side of the rocking side wall 1 1 on the front side, the object to be processed is finely broken by the cooperation with the rough cutting rotary blade 23 and the fine cutting rotary blade 24 so as to be inclined downward along the rear side. Fixed blade 32. The fixed blade 32 has a front member 3 2 a located on the front side of the movement of the rough cutting blade 23 in the left-right direction, and a front member 3 2 a in the rough cutting blade 2 3 . The position of the moving track is divided by the rear member 3 2 b (refer to the 9 31 knife invention specification (supplement) / 92_ 11 /92122727 1312295 Figure 3). As shown in Fig. 7, the front member 3 2 a is fixed to the front rocking side wall 1 by a required number of bolts 3 3 , and faces the trailing edge of the moving locus of the rough cutting rotary blade 2 3 . It is formed to have a function as a blade (a blade that cuts the object to be processed by the cooperation with the rotary blade 23 for rough cutting). As shown in Fig. 7, the rear member 3 2 b is fixed to the front rocking side wall 1 by a required number of bolts 3 4 and nuts 35, and faces the movement of the rough cutting rotary blade 23. The side edge of the track is formed to have a function as a blade (a blade that cuts the object to be processed by the cooperation with the rough cutting blade 23). Further, the trailing edge of the rear member 3 2 b is formed with irregularities (see FIG. 3 ) so as to mesh with the fine cutting rotary blade 24 , and the unevenness is formed as a blade (by the rotary blade 24 for fine cutting) Cooperate to break the edge of the object to be processed). The head of the above-mentioned bolts 3 4 is formed into a convex curved surface above the recess in which the workpiece is not embedded. Further, the upper portion of the shaft portion of the bolt 34 (the portion below the head portion) is formed as an angular shaft portion (a rectangular shaft having a cross section) which is fitted into the corner hole formed by the 3 2 b of the rear member, and the bolt The 3 4 system is formed in a state of not rotating relative to the rear member 3 2 b. On the inner side of the rear rocking side wall 1 1 , three scrapers 38 that reach the object to be processed by the cooperation with the fine cutting rotary blade 24 are attached so as to be inclined downward toward the front. The scraper 38 is disposed so as not to collide with or interfere with the rough cutting blade 23. As shown in Fig. 7, the scraper 38 is fixed to the rear rocking side wall 1 by a required number of bolts 3 4 and nuts 35, and the leading edge of the scraper 38 is rotated for fine cutting. Concavities and convexities are formed in a manner in which the blades 24 are engaged (see FIG. 3), and the concavities and convexities are formed with a scraping portion (by 10 312 / invention specification (supplement) / 92-11 / 92122727 1312295 by the cooperation with the rotary cutting blade 24 for fine cutting And scraping off part of the treated object). According to the above configuration, the rough cutting blade 23 and the fine cutting rotary blade 24 are formed between the fixed blade 3 2 and the blade 38. As shown in Fig. 5 and Fig. 6, the covering member 40 that covers the movement locus space of the rough cutting rotary blade 23 is provided so as to be positioned below the fixed blade 32 and the blade 38. The covering member 40 has a front side member 40a provided on the front rocking side wall 1; a rear side member 40c provided on the rear rocking side wall 1; and a front side member 40a and a rear side Member 40c, and intermediate member 40b with these other bodies. Further, in Fig. 5, the boundary between the front member 40a and the intermediate member 40b is displayed with "L", and the boundary between the intermediate member 40b and the rear member 40c is displayed in "Μ". The intermediate member 40b is detachably formed on the casing 3 by the following mechanism. On the rocking side wall 1 1 before and after the above, a supporting member 42 for supporting the intermediate member 40b of the covering member 40 in a state in which these are opened is provided. Further, on the front and rear rocking side walls 1 1, a holding member 43 that prevents the movement of the intermediate member 40b in the right and left direction is provided. Then, when the side wall 1 1 is rocked before and after closing (in the erected state), the front and rear support members 4 2, the front side member 40 a and the rear side member 40 c are formed so that the intermediate member 40 b is formed as In a state where it does not move in the front-rear direction, the holding member 43 forms a state in which it does not move in the left-right direction. Further, as described above, the support rods 4 4 supporting the lower portion of the intermediate member 40b in a fixed state are fixed across the lower portion of the left and right fixed side walls 9. The support rod 4 4 spans the intermediate member 40b of the covering member 40 in the state of the rocking side wall 1 1 before and after opening, and supports the member 4 2 11 312 / invention specification (supplement) / 92-11 /9212272 7 Between 1312295, it has the function as a rod supporting the intermediate member 40b. With the above configuration, the intermediate member 40b can be easily taken out of the casing 3 by opening the front and rear rocking side walls 1, so that the cleaning in the intermediate member 40b can be easily performed. The front and rear rocking side walls 1 1 are locked at the position of the state of Fig. 5 by the locking device 46 shown in Fig. 8. The locking device 46 has a planar shape in which the tapered surface 47 which is open toward the front end side as viewed from above is opposite to each other: a locking piece 48 of a shape; a screw 5 1 attached to the through hole 49 formed in the locking piece 48 and screwed into the screw hole 50 formed on the fixing side wall 9; the opposite side of the tapered surface 47 The inclined surface 5 2 on the fixed side wall 9 and the inclined surface 5 2 formed on the rocking side wall 1 are configured such that after the tapered surface 47 and the inclined surface 5 2 are opposed, the screw is tightened The first side of the tapered surface 4 7 is attached to the inclined surface 52 to lock the rocking side wall 11 to the fixed side wall 9. The fixed side wall 9 on the right side described above is provided with a feeder 56 which is slidable and openable via a hinge 55. Further, the feeder 56 is formed in a state of being fixed to the left fixed side wall 9 by a known locking device (not shown) in the state of Fig. 1 . An interlocking (i η r e r 1 〇 c k ) means 57 is provided in the feeder 56 and the rocking side wall 1 1 described above. The interlocking device 57 has a reflective photoelectric switch 58 provided on the upper portion of the rocking side wall 1; and a detected sheet 5 9 provided on the feeder 56 as detected by the photoelectric switch 58 in the state of Fig. 1. . Therefore, as long as the photoelectric switch 58 does not detect the detected piece 5 9, that is, the rocking side wall 1 1 is closed (in an upright state), and the feeder 56 does not become loaded on the casing 3, 12 312/Invention Manual (Supplement)/92-11 /92122727 1312295 Even if the main switch of the fine cut machine 1 is placed at the "Ο N" position, the motor 18 will not operate. A receiving piece 60 for preventing the unintentional opening of the rocking side wall 1 is provided in the lower portion of the feeder 56. The function of the fine machine 1 is the same as that of the prior art. Hereinafter, supplementary explanations will be made for changes and the like. (1) The rough cutting rotary blade 2 3 and the fine cutting rotary blade 24 are the rotary blades of the first application of the patent scope. The structure of the rough cutting rotary blade 2 3 and the fine cutting rotary blade 24 is arbitrary. (2) The interlock device 57 may not be provided. (Industrial Applicability) The present invention can be widely used to cut off various materials. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front view showing an essential part of an embodiment of the present invention. Fig. 2 is a cross-sectional view taken along line Π to Π in Fig. 1. Fig. 3 is a view along m in Fig. 1. Sectional view of the m-line Figure 4 is a cross-sectional view showing only the middle omitted along the IV-IV line in Figure 1. Figure 5 is a cross-sectional view along the V-V line in Figure 1. 6 To eliminate the cross-section of the fixed edge along the VI-VI line in Figure 5. Figure 7 is a cross-sectional view taken along line VH ~ VE in Figure 1. Figure 8 is a cross-sectional view taken along line Μ ~ Μ in Figure 1. Figure 9 is taken along line IX ~ IX in Figure 1. Section 〇 (component symbol description) 1 Fine machine 13 312 / invention manual (supplement) / 92-11/92122727 1312295 2 horizontal substrate 3 shell 4 inlet 5 outlet 6 opening 9 fixed side wall 10 support shaft 11 rocking side wall 12 Connector 15 Through hole 16 Bearing 17 Rotary shaft 18 Motor 19 Left spiral part 2 0 Right spiral part 23 Rough cutting rotary blade 24 Fine cutting rotary blade 25 Corner hole 27 Annular groove 28 Projection 2 9 Fine break Tooth 'fixing blade 3 2a front member 3 2b rear member 312 / invention specification (supplement) / 92-11 /92122727 14 1312295 33 bolt 34 bolt 3 5 nut 3 8 scraper 40 cladding member 40a front side member 40b intermediate member 40c Side member 42 support member 43 holding member 44 support rod 46 locking device 4 7 Conical surface 48 Locking plate 4 9 Through hole 5 0 Screw hole 5 1 Screw with handle 5 2 Inclined surface 5 5 Hinge 5 6 Feeder 5 7 Interlocking device 58 Photoelectric switch 5 9 Tested piece 6 0 Sheet 312 / Invention Manual (supplement) / 92-11 /92122727 15